package com.ep.in;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import com.ep.entity.Admin;

public class interceptor implements HandlerInterceptor {
	@Override
	public void afterCompletion(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, Exception arg3)
			throws Exception {
		//执行完毕，返回前拦截
	}

	@Override
	public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, ModelAndView arg3)
			throws Exception {
		//处理过程中执行拦截
	}

	@Override
	public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object arg2) throws Exception {
		//在拦截点执行前拦截，如果返回true则不执行拦截点后的操作（拦截成功）
		//返回false则不执行拦截
		Admin admin=new Admin();
		if( admin.getUname()== null || admin.getUname() == "") {
			//登录失败，跳转到登录页
			response.sendRedirect(request.getContextPath());
			return false;
		}else{
			//登陆成功，不拦截
			return true;
		}
	}


}
